package com.lanou.userLogin.user.web.servlet;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;

@WebServlet("/userQuitServlet")
public class UserQuitServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        HttpSession session = req.getSession(false);
        if (session != null && session.getAttribute("username") != null) {
            session.invalidate();
            System.out.println("您已退出");
            resp.setContentType("text/html;charset=utf-8");
            PrintWriter pw = resp.getWriter();
            pw.write("您已退出，3秒后返回首页");
            resp.setStatus(302);
            resp.setHeader("refresh","3;/jsps/main.jsp");
        }
    }
}
